Improvement in crosscut-sawing machines



AUNITED STATES PATENT GTFICE.j

ANDREW B. J. FLOWERS, OF INDIANAPOLIS, INDIANA-.

IMPRQVEMENT iN CPtOSSCUT-SAWING MACHINES.

Specification forming part of Letters Patent No. 41,063, dated January5, 1864.

To all whom it may concern:

Be it known that I, lANDREW B. J. FLow- ERS, of Indianapolis, in thecounty of Marion and State of Indiana, have invented a new and ImprovedCrosscut-Sawing Machine; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings, making a part of this specification, inwhich- Figure l is an end view of my invention; Fig. 2, a plan or topview of the same; Fig. 3, an enlarged detached view of an eccentric andyoke pertaining to the same; Fig. 4, an enlarged and detached sectionalview of a dog pertaining to the same.

Similar letters of reference indicate corresponding parts in the severalfigures.v

The object of this invention is to obtain a simple and efficientcrosscut-sawin g machine which will occupy but little space, be capableof being readily manipulated, the saw as it operates enabled to clearthe kerf of sawdust, and the log fed or adjusted to the saw with thegreatest facility, and firmly retained in position when adjusted.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents a framing and platform, which may be constructed in anyproper manner to support the working parts of the machine.

B is a horizontal shaft, having on one end a pinion, C, which gears intoa horizontal wheel, D, to which a sweep, E, is attached. 0n the oppositeend ofthe shaft B there is also atoothed wheel, F, which gears into apinion, F', the latter being on a shaft, H, which also has upon it acrank-wheel, I, and an eccentric,

K is a yoke, which is fitted on the eccentric J, and is attached to abar, L, the latter having a guide, M, at one side of it, said guidebeing fitted on a segment-bar, N, which is perforated with a series ofholes, as shown clearly in Fig. 1. The side of the bar L opposite to theside where the guide M is attached isgrooved longitudinally, and aslide, O, is connected by a pitman, P, with the wheel I, and to saidslide the saw Q is attached.

R R represent two ways, which are permanently attached to the platform,and have a truck, S, placed thereon. This truck is provided with abolster, a, having a curved recess in its upper surface to receive oneend of the log T to be sawed and on said ways, at a point underneath thesaw Q, there is a roller, U, having a concave made circumferentially init to receive the opposite end of the log T. The bearings b b of theroller U are attached to the ways R R.

V is abar, one end of which is secured by a pivot, c, to the framing A,near the bottom of t-he segment-bar N. The outer end of this bar has aspike, d, in it to penetrate into the upper surface of the log T, andprevents it from rolling on its supports.

W represents a clamp-lever, which is formed of abar, a, having amortise, b, made in it for a rope, X, to pass through. This bar a has aclamp or jaw, c, fitted in the mortise b and working on a pivot, a',which, when the bar c is moved in the direction indicated by the arrowl, (see Fig. 4,) will bite or clamp the rope X between it and the bottomof the mortise, the latter being attached to the truck S, and the lowerend of the bar a, when actuated, resting against a projection, d, in theplatform of the framing A. (See Figs. 1 and 2.)

The operation is as follows The log T is adj usted on the truck S androller U, and the spike d in the bar V is pressed down into the uppersurface of the log, and the latter, by drawing the truck through themedium of the rope X, placed in the proper relative position with thesaw Q, the latter being raised and secured in an elevated position, freefrom the log, by a pin, e, in the segment-bar N. When the log isproperly adjusted, the pin e is withdrawn, and the saw allowed to restupon the log, and a reciprocating movement is given the saw by startingthe draftanimal attached to the sweep E. Besides the reciprocatingmovement of the saw, which is communicated to it by the wheel I andpitman P, it has a vibrating movement, which is given it through themedium of the bar L, yoke K, and eccentric J. This vibrating movementenables the saw to clear the kerf of sawdust, and the eccentric shouldbe so arranged relatively with the driving parts ofthe saw that the heelor back part of the saw will be raised as it is shoved forward andlowered as it is drawn back. The log T, after each cut, is fed or drawnalong for a succeeding cut by raising the saw and placing the pin cunderneath the bar L, and then operating or pulling the rope X throughthe medium of the clamp -lever W, the rope being held taut with one handWhile the lever is shoved forward by the other to obtain a bite on therope, and the latter being drawn forward when the lever 0r bar a. ismoved in the direction indicated by arrow l in Fig. 4. The segment-bar Nserves to guide and steady the saw Q and bar L, and the bar V, with itsspike d, serves to prevent the log from rolling, and also from risingdring the first cuts.

Having thus described my invention, What I claim as new, and. desire tosecure by Letters Patent, isy l. The giving of the saw Q a vibrating mo-ANDREW B. J. FLOWERS.

Witnesses:

JOHN SMITHER, CHARLES MGEWEN.

